Last frost dates in Pennsylvania
Typical last frost
April 2
That is the date for the typical Pennsylvania resident, weighted by city population. Across the state the average last frost runs from March 30 to April 30, so look up your own town below.
- Earliest city
- Mar 30
- Latest city
- Apr 30
- Typical first frost
- Nov 10
- Cities
- 35
This week in Pennsylvania
Frost in the forecast for 17 of 35 cities
National Weather Service forecast, updated Oct 22, 11:10 UTC
- State CollegeFriday night · low 28°F
- HazletonFriday night · low 29°F
- ScrantonFriday night · low 30°F
- Wilkes-BarreFriday night · low 30°F
- AltoonaFriday night · low 30°F
- WilliamsportFriday night · low 30°F
- LancasterFriday night · low 31°F
- ChambersburgFriday night · low 31°F
- CarlisleFriday night · low 31°F
- AllentownFriday night · low 32°F
- BethlehemFriday night · low 32°F
- EastonFriday night · low 32°F
- MonroevilleSaturday night · low 32°F
- LebanonFriday night · low 32°F
- PlumSaturday night · low 32°F
- New CastleFriday night · low 32°F
Frost dates by city
| City | Last frost | Safe after | First frost | Season |
|---|---|---|---|---|
| Philadelphia | Mar 30 | Apr 12 | Nov 17 | 232 days |
| Pittsburgh | Apr 18 | May 6 | Oct 28 | 193 days |
| Allentown | Apr 20 | May 6 | Oct 24 | 184 days |
| Reading | Apr 14 | Apr 30 | Oct 29 | 197 days |
| Erie | Apr 26 | May 13 | Nov 4 | 192 days |
| Bethlehem | Apr 20 | May 6 | Oct 24 | 184 days |
| Scranton | Apr 23 | May 10 | Oct 20 | 178 days |
| Lancaster | Apr 19 | May 7 | Oct 24 | 186 days |
| Levittown | Apr 21 | May 7 | Oct 25 | 185 days |
| Harrisburg | Apr 15 | May 2 | Oct 23 | 189 days |
| York | Apr 26 | May 13 | Oct 19 | 177 days |
| Wilkes-Barre | Apr 23 | May 10 | Oct 20 | 178 days |
| Altoona | Apr 25 | May 11 | Oct 21 | 176 days |
| State College | Apr 20 | May 6 | Oct 26 | 187 days |
| Penn Hills | Apr 16 | May 4 | Nov 1 | 197 days |
| Norristown | Apr 8 | Apr 23 | Oct 31 | 203 days |
| Chester | Mar 30 | Apr 9 | Nov 16 | 230 days |
| Mount Lebanon | Apr 18 | May 6 | Oct 28 | 193 days |
| Bethel Park | Apr 18 | May 6 | Oct 28 | 193 days |
| Easton | Apr 18 | May 5 | Oct 25 | 188 days |
| Hazleton | Apr 30 | May 18 | Oct 22 | 175 days |
| Drexel Hill | Apr 2 | Apr 13 | Nov 10 | 224 days |
| Monroeville | Apr 22 | May 12 | Oct 25 | 186 days |
| Williamsport | Apr 25 | May 12 | Oct 24 | 181 days |
| Lebanon | Apr 20 | May 7 | Oct 25 | 185 days |
| Plum | Apr 16 | May 4 | Nov 1 | 197 days |
| King of Prussia | Apr 8 | Apr 23 | Oct 31 | 203 days |
| Chambersburg | Apr 18 | May 5 | Oct 25 | 188 days |
| Pottstown | Apr 20 | May 6 | Oct 23 | 186 days |
| Carlisle | Apr 23 | May 9 | Oct 18 | 177 days |
| Allison Park | Apr 16 | May 4 | Nov 1 | 197 days |
| New Castle | Apr 30 | May 19 | Oct 23 | 175 days |
| Murrysville | Apr 22 | May 12 | Oct 25 | 186 days |
| Baldwin | Apr 18 | May 6 | Oct 28 | 193 days |
| Phoenixville | Apr 18 | May 4 | Oct 27 | 192 days |
When to plant in Pennsylvania
Tomatoesby city
Potatoesby city
Tulip bulbsby city
Garlicby city
Pumpkinsby city
Strawberriesby city
Onionsby city
Carrotsby city
Sunflowersby city
Cucumbersby city
Daffodil bulbsby city
Cornby city
Sweet potatoesby city
Asparagusby city
Watermelonby city
Lettuceby city
Green beansby city
Broccoliby city
Beetsby city
Peasby city
Zucchiniby city
Cabbageby city
Radishesby city
Brussels sproutsby city
Okraby city
Peppersby city
Spinachby city
Basilby city
Cilantroby city
Butternut squashby city
Kaleby city
Cantaloupeby city
Collard greensby city
Turnipsby city
Dillby city
Celeryby city
Eggplantby city
Cauliflowerby city
Leeksby city
Swiss chardby city
Parsleyby city
Questions
When is the last frost in Pennsylvania?
It depends on where you are. Across the 35 cities we track, the average last frost runs from March 30 to April 30. In Philadelphia, the largest, it is March 30.
When is the first frost in Pennsylvania?
For a typical resident, around November 10. Higher and more northern towns get it earlier.